Lighting fixture



' I. l. HANCE LIGHTING FIXTURE Filed April 22. 1922 ATTOR Y6 INVENTOR.

Patented Jan. I, 1924.

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ISAAC IRVING HANCE, OF GLEVEIrAND, OHIO, ASSIGNOR TO THE CRESCENT BRASS IPRODUCTS COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

LIGHTING FIXTURE.

Application filed April 22, 1922. Serial No. 556,035.

To all 10h 0m it may concern Be it known that I, ISAAC I. I-IANon, a citizen of the United States, and a resident of Cleveland, county of Cuyahoga, and State of Ohio, have invented a new and useful Improvement .in Lighting Fixtures, of which the following is a specification, the principle of the invention being herein explained and the best mode in which I have contemplated applying that princlple, so as to distinguish it from other inventions.

The present invention relates to lighting fixtures and more particularly to means within such a fixture for adjusting the vertical posit-ion of the socket within large limits. At the present time the length and position of filaments in lamp bulbs varies considerably in the different sizes and kinds and a fixture to work in a satisfactory way must be so made that the position of the socket may be quickly varied within rather large limits. The present fixture provides an adjustable holder for the socket which gives not only a large total adjustment, but also allows for a small adjustment within the total. To the accomplishment of the foregoing and related ends, said invention, then, consists of the means hereinafter fully described and particularly pointed out in the claims.

The annexed drawing and the following description set forth in detail certain mechanism embodying the invention, such disclosed means constituting, however, but one of various mechanical forms in which the principle of the invention may be used.

In said annexed drawing Fig. 1 is a central vertical section through my fixture; Fig. 2 is a similar section but showing the socket holding cup in reversed position; Fig. 3 is a perspective view of the socket holding cup; Fig. 4 is a sectional view of the cup taken on a horizontal plane; and Fig. 5 is a perspective View of the nipple.

The present fixture comprises an upper flared portion 1 adapted for attachment to a ceiling or the like, there being a barrel portion 2 below the upper flared part and a lower flared globe carrying portion 3 having the usual screws 4t or other globe holding devices.

The barrel portion 2 may be of any suitable shape and is provided with preferably three lugs or bosses 6 which are tapped to receive screws 7 which extend through the lugs and aligned apertures 8 in the barrel.

Within the barrel is adjustably mounted a socket holding cup 10 formed to fit snugly within the barrel and to be easily movable therein. This cup is provided with a plurality of series of slots 11 and 12, two such series of slots being illustrated, the slots 11 of the first series being spaced at equal dis tances around the cup in rows, the lowermost slots 11 of each row being aligned horizontally as are the corresponding slots 11 and 11 of this series. The other series of slots 12 are likewise in rows, there being shown three slots 12, 12 and 12 in each row, the rows being spaced between those of the first series and the slots 12, 12 and 12 being staggered relatively to the slots 11, 11 and 11.

These two series of slots are arranged so as to register with the apertures 8 and holding screws 7 which may be screwed in so as to engage in the slots to secure the cup in position. The bottom 15 of the cup is provided with a square aperture 16 and the lamp socket has the usual interiorly threaded end 17 into which a squared threaded nipple 18 is adapted to be screwed. This squared nipple extends through the aperture 16 and is held in place by a nut 19 on the upper side of the cup, thus clamping the end 17 against the cup bottom. This squared nipple prevents the socket from turning when a lamp bulb is screwed into or unscrewed from the socket.

As shown in the present device, each series of slots consists of three rows of three slots each, thus giving six possible positions for the cup when in the position shown in Fig. l. The cup is, however, reversible and by mere ly changing the lamp socket to the other side, six more positions are available. In usual construction the difference between slots will be about one-quarter of an inch, giving with the present device a total adjustment of three inches with twelve variations of one-quarter of an inch, which is sufficient to take substantially all of the standard types of bulbs which are commonly used in fixtures of this type.

The adjustment of the cup may be made quickly and easily and likewise the socket is easily removed and the cup reversed as to position. The entire fixture comprises but few parts easily made and assembled and yet furnish a large total adjustment with a large number of positions which may vary only slightly as, of course, the number of series of slots,- as well as their spacing, may be changed for various types of fixtures.

I therefore particularly point out and dis tinctly claim as my invention 1. In a lighting fixture and lamp socket holder, the combination of a fixture and globe holder having a central barrel provided with spaced tapped apertures, and an adjustable socket holding cup comprising a horizontal base portion and a cylindrical flange portion, a series of spaced aligned slots in said flange portion, each alternate row of slots belonging to one of two series, the slots of one series being staggered relative to those of the other series, suchslots being adapted to register with such spaced apertures, and holding means mounted in such apertures to engage and secure said cup in adjusted position.

2. In a lighting fixture and lamp socket holder, the combination of a fixture and globe holder having a: central barrel provided with spaced tapped apertures, and an adjustable socket holding cup having a squared aperture inthe base adapted to receive a complementary shaped lamp socket end, said cup being provided with two series of spaced slots, one series being staggered relative to the other, each such series of slots being adapted to register with such aperturein said holder, and holding means mounted in such apertures and adapted to pass through such slots to secure said cup in adjusted position.

3. In a lighting fixture, the combination of a fixture having one end adapted for attachment to a support and having a central barrel and a flared lower globe supporting portion, a socket holding cup comprising a horizontal base portion and a cylindrical flange portion adjustably mounted in said barrel and provided with a squared socket receiving aperture, a squared threaded shank adapted to pass through such squared threaded aperture to prevent said socket from rotating, and an adjusting nut on said shank adapted to secure said socket to said cup whether said cup is positioned in said central barrel With its flange portionabove or below its base portion.

Signed by me, this 18th day of April,

ISAAC IRVING HANCE. 

